De Hartmann: First Series, No. 1
Gurdjieff & De Hartmann: Music For The Piano, Volume III: Hymns, Prayers and Rituals
Laurence Rosenthal, Charles Ketcham
De Hartmann: First Series, No. 2
De Hartmann: First Series, No. 3
De Hartmann: First Series, No. 4
Laudamus
Laurence Rosenthal
Gurdjieff: First Series, No. 5
23.X.1926
Laurence Rosenthal
Gurdjieff: First Series, No. 6
Gurdjieff: First Series, No. 7
Gurdjieff: First Series, No. 8
De Hartmann: First Series, No. 9
26.IX.1926
Laurence Rosenthal
Gurdjieff: First Series, No. 10
Hymn for Christmas Day, No.1
Laurence Rosenthal
Gurdjieff: First Series, No. 11
10.XII.1925
Laurence Rosenthal
De Hartmann: First Series, No. 12
Gurdjieff: First Series, No. 16A
Prayer for Mercy
Laurence Rosenthal
De Hartmann: First Series, No. 13
"Rejoice, Beelzebub!"
Laurence Rosenthal
De Hartmann: First Series, No. 17
Holy Affirming, Holy Denying, Holy Reconciling
Laurence Rosenthal
De Hartmann: First Series, No. 18
Orthodox Hymn for a Midnight Service
Laurence Rosenthal
Reading from a Sacred Book
Laurence Rosenthal
Gurdjieff: Second Series, No. 21
Religious Ceremony
Laurence Rosenthal
Gurdjieff: Second Series, No. 22
De Hartmann: Second Series, No. 23
Orthodox Hymn from Asia Minor
Laurence Rosenthal
De Hartmann: Second Series, No. 24
De Hartmann: Second Series, No. 25
Prayer and Procession
Laurence Rosenthal
De Hartmann: Second Series, No. 26
Easter Hymn
Laurence Rosenthal
De Hartmann: Second Series, No. 27
26.X.1926
Laurence Rosenthal
De Hartmann: Second Series, No. 28
De Hartmann: Second Series, No. 29
20.X.1926
Laurence Rosenthal
De Hartmann: Second Series, No. 30A
19.II.1927
Laurence Rosenthal
De Hartmann: Second Series, No. 31A
De Hartmann: Second Series, No. 32
De Hartmann: Second Series, No. 33
Alleluia
Laurence Rosenthal
Gurdjieff: Second Series, No. 34
Hymn for Christmas Day, No. 2
Laurence Rosenthal
Gurdjieff: Second Series, No. 35
De Hartmann: Second Series, No. 36
De Hartmann: Second Series, No. 38
Tibi Cantamus, No. 1
Laurence Rosenthal
Gurdjieff: Third Series, No. 42
Hymn for Easter Wednesday
Laurence Rosenthal
Gurdjieff: Third Series, No. 43
14.IV.1927
Laurence Rosenthal
Gurdjieff: Third Series, No. 47
Gurdjieff: Third Series, No. 45
Essene Hymn
Laurence Rosenthal
Gurdjieff: Third Series, No. 46
Chant from a Holy Book
Laurence Rosenthal
De Hartmann: Third Series, No. 48
Gurdjieff: Third Series, No. 49